// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef V8_TRACING_TRACING_CATEGORY_OBSERVER_H_
#define V8_TRACING_TRACING_CATEGORY_OBSERVER_H_

#include "include/v8-platform.h"

namespace v8 {
namespace tracing {

    class TracingCategoryObserver : public TracingController::TraceStateObserver {
    public:
        enum Mode {
            ENABLED_BY_NATIVE = 1 << 0,
            ENABLED_BY_TRACING = 1 << 1,
            ENABLED_BY_SAMPLING = 1 << 2,
        };

        static void SetUp();
        static void TearDown();

        // v8::TracingController::TraceStateObserver
        void OnTraceEnabled() final;
        void OnTraceDisabled() final;

    private:
        static TracingCategoryObserver* instance_;
    };

} // namespace tracing
} // namespace v8

#endif // V8_TRACING_TRACING_CATEGORY_OBSERVER_H_
